The Canton of Saint-Valery-sur-Somme is a former canton situated in the Somme department of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had 11,583 inhabitants (2012).
The canton is organised around Saint-Valery-sur-Somme in the arrondissement of Abbeville. The altitude varies from 0 m (Boismont) to 90 m (Franleu) for an average altitude of 24 m.
The canton comprised 12 communes: